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Financial Expenses, Net (Tables)
 12 Months Ended
Dec. 31, 2019
Other Income and Expenses [Abstract]  
Schedule of financial expenses, net

   Year Ended December 31, 
   2019   2018   2017 
Foreign currency transactions and other  $(34)  $42   $(188)
Financial expenses related to loan agreement with Kreos   1,499    2,398    2,451 
Bank commissions   31    26    30 
                
   $1,496   $2,466   $2,293